Review on BTSKY 6 Pack Multipurpose Utility Box - Large Capacity Pencil Holder for Organizing and Carrying Pencils, Watercolor Pens, and Stationery - Assorted Colors - Snap Closure - Office Supplies Organizer by Lindsey Garcia

This box has two lid hinges, each about 2.5 cm long, which are well designed and reflect the standard two piece and pin hinge design. There are similar plastic boxes with identical dimensions on the market. One of them in particular, labeled Pen+GEAR, has a piano loop. Good; however very thin. Depending on how often the lid is closed, the life expectancy of the box as a separate component can be short. Pen+GEAR hinges utilize the flexibility of thin plastic while BTSKY relies on good design! BTSKY drawers have a more secure lid latch, another plus. Unfortunately, unlike Pen+GEAR, BTSKY boxes are NOT designed to "lock" when stacked. I'm surprised this feature has been overlooked; The reason I gave this product a 4 and not a 5.